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sdas [7]
3 years ago
6

A survey of a local high school asked students to name their favorite subject. One out of every 12 students said that their favo

rite subject was math. If 34 students said that math is their favorite, how many students took the survey
Mathematics
2 answers:
notka56 [123]3 years ago
3 0

Answer:

408

Step-by-step explanation:

You would set up a proportion of 1/12 = 34/x. You would do the butterfly method and get 1x=408. Then divide 408 by 1 to get 408.

Paladinen [302]3 years ago
3 0

Answer:

408

Step-by-step explanation:

You see the rate is one out of twelve(1/12)

So if 1 now equals 34 (ALWAYS KEEP THE FRACTIONS BALANCED, WHAT YOU DO TO ONE SIDE YOU MUST DO TO THE OTHER)

so to get 1 to 34 you multiplied by 34. So do the same to 12 to get your total number or surveyed students.

Hope I helped!

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2: The perimeter of the base is 37 units.

Step-by-step explanation:

1. A = LW = 21 * 16 = 336 units^2     True

2. P = 2(L + W) = 2(21 + 16) = 2(37) = 74 units      False

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3 years ago
The data set represents a month-to-month progression of gasoline prices over the course of several months in an unspecified city
Tresset [83]

The quadratic regression equation for this data set is \rm y=-0.143x^2+0.59x+2.82\\.

<h3>What is the general form of a quadratic equation?</h3>

The general form of the quadratic equation is given by;

\rm ax^2+bx+c=0

Where; a, b, and c are the constants.

x;   0       1         2        3          4         5

y;  2.82  3. 29  3. 46  3. 33   2. 88  2. 24

From the table when the value of x = 0 the value of y is 2.82.

Then,

\rm y=ax^2+bx+c\\\\x=0\\\\2.82=a0^2+b(0)+c\\\\c=2.82

From the table when the value of x = 3 the value of y is 3.33.

\rm y=ax^2+bx+c\\\\x=3\\\\2.82=a(3)^2+b(3)+c\\\\9a+3b+2.82=2.82\\\\9a=-3b\\\\b=-3a\\\\

From the table when the value of x = 5 the value of y is 2.24.

\rm y=ax^2+bx+c\\\\x=3\\\\2.24=a(5)^2+(-3a)(5)+c\\\\25a-15a+2.82=2.24\\\\40a=2.24-2.82\\\\10a=-0.68\\\\a= \dfrac{-0.68}{10}\\\\a=-0.143

And the value of b is;

\rm b=3a\\\\b=3(-0.14)\\\\b=0.59

Therefore,

The quadratic regression equation for this data set is;

\rm y=ax^2+bx+c\\\\y=-0.143x^2+0.59x+2.82\\\\

Hence, the quadratic regression equation for this data set is \rm y=-0.143x^2+0.59x+2.82\\.

To know more about the Quadratic equation click the link given below.

brainly.com/question/14935613

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Express the ratio in the simplest form. 5.6 m to 28 cm
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<h3>your answer is 20: 1 2 </h3>

<h2>hope it's helpful for you ✌️❤️ ✌️✌️✌️✌️</h2>

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